
Sharks and rays are among the world’s most threatened species, mainly due to overfishing. They are sometimes targeted for their fins and meat, but more often caught as bycatch in nets aiming to catch other fish. Declines in these ocean predators can disrupt food webs, harm tourism income and worsen climate change by undermining the resilience of ocean ecosystems.
However, halting overfishing of sharks and rays is difficult because the social dynamics around it are complex. Many threatened species are caught in small-scale, mixed-species fisheries in tropical coastal areas, where households depend on the fish they catch – including endangered sharks and rays – for food and income.